The subtropical front: Satellite observations during FRONTS 80
The subtropical front: Satellite observations during FRONTS 80
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副热带锋：FRONTS 80 期间的卫星观测
DOI：
10.1029/jc087ic12p09523
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发表时间：
1982
影响因子：
--
通讯作者：
M. V. Woert
中科院分区：
文献类型：
--
作者：
M. V. Woert
利用1979-1980年冬季作为FRONTS 80试验的一部分收集的卫星海面温度、现场水文资料和卫星跟踪漂流物资料描述了夏威夷东北部北太平洋副热带锋的空间结构。卫星观测揭示了与锋面有关的变形尺度弯曲（85 km × 32 km），其演化时间尺度为160天。卫星测量的锋面海面温度变化在10公里范围内通常为1°C。计算了卫星数据和现场水文数据之间的相关系数，发现在800米以上显著非零。在深层的高度相关性表明，卫星正在观察一个具有相当大的垂直范围的特征，而不仅仅是一个表面现象。此外，还将水文数据和漂流物轨迹与卫星获取的海面温度数据相结合。它们共同表明，卫星观测到的特征在实验期间几乎是静止的。另外，还表明锋面上的气流沿着分布接近地转平衡。
Satellite-derived sea surface temperature, in situ hydrography data, and satellite-tracked drifter data collected during winter 1979–1980 as part of the FRONTS 80 experiment are used to describe the spatial structure of the North Pacific subtropical front northeast of Hawaii. The satellite observations reveal a deformation scale meander (85 km × 32 km) in association with the front having an evolution time scale of ∼60 days. The satellite measurements of the change in sea surface temperature across the front are typically 1°C within a distance of 10 km. The correlation coefficients between the satellite data and the in situ hydrographic data were computed and found to be significantly nonzero above 800 m. The high correlation at deep levels indicates that the satellite was viewing a feature with sizable vertical extent, not just a surface phenomenon. Additionally, the hydrographic data and drifter trajectories were combined with the satellite-derived sea surface temperature data. Together they demonstrate that the feature observed by the satellite was nearly stationary during the experiment period. In addition, they also indicate that the flow along the front was nearly in geostrophic balance.